Combination-lock



B. G. PATTERSON. COMBINATION LOCKI APPLICATION FILED MAR-25, 1918- RENEWED DEC. 2&{1920- 1,368,526.. Patented Feb. 15, 1921.

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COMBINATION LOCK. APPLICATION FILED MAR. 25. 191B. RENEWED 05c. 28. 1920.

Patfinoed Feb. 15,1921.

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COMBINATION LOCK. APPLICAT IQN FILED MMLZS, I918. RENEWED DEC. 28, 1920- 1,368,526, Patented Feb. 15, 1921.

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A TTORNEYS UNITED STATES BENJAMIN G. PATTERSON, OF OKLAHOMA, OKLAHOMA.

COMBINATION-LOCK.

Application filed March 25, 1918, Serial No. 224,499.

T 0 all whom it may concern:

Be it known that I, BENJAMIN Gr. PATTER- SON, a citizen of the United States, and a resident of Oklahoma city, in the county of Oklahoma and State of Oklahoma, have made certain new and useful Improvements in Combination-Locks, of which the following is a specification.

My invention relates to improvements in combination locks, being more particularly applicable to looks for carbureters of automobile engines and the like, and it consists in the combinations, constructions and arrangements herein described and claimed.

An object of my invention is to provide a combination look, by means of which the needle valve of a carburetor may be locked to prevent gasolene flowing into the carbureter, when desired, thereby tending to prevent theft of the car.

A further object of my invention is to pro vide a combination lock, the dial of which may also be used to indicate the position of the carbureter valve for the best running of the car, the adjustment of the carbureter valve being effected without interferring in any way with the look when the machine is being used.

A further object of my invention is to provide a combination lock in which a very large number of slight changes may be made so as to permit the manufacture of the lock in large quantities, each lock having a clifferent combination.

A further object of my invention is to provide means for housing the mechanism of the lock and the valve stem, so that any access to the valve except through the combin-ation, is made very difficult.

Other objects and advantages will appear in the following specification, and the novel features of the invention will be particularly pointed out in the appended claims.

My invention is illustrated in the accompanying drawing forming part of this application, in which 1-- Figure 1 is a sectional view through a lock constructed according to my invention, and through a portion of the carbureter.

Fig. 2 is a similar view showing a modified form of the device.

Fig. 3 is a sectional view through the lock casing the tumblers and spacing rings being shown in elevation.

Fig. 1 is an enlarged detailed sectional Specification of Letters Patent. Patented Feb, 15, 1921,

Renewed December28, 1920. Serial No. 433,737.

view through the lock along line 4:4: of Fig. 3.

Fig. 5 is a sectional view on the line 5-5 of Fig. 45, looking in the direction of the arrows.

Fig. 6 is a sectional view along the line 6-6 of Fig. 4.

Fig. 7 is a sectional view along the line 77 of Fig. 4;.

Fig. 8 is a perspective view of the rear face of a base plate and the sleeve connected therewith.

Fig. 9 is a perspective view showing the tumblers and spacing rings in their relative positions ready for assembly.

Fig. 10 is a perspective view showing a portion of the actuating rod.

Fig. 11 is a perspective view showing the tumblers in position to lock the device, but with one of the tumblers brought to its unlocking position.

Fig. 12 is a view similar to Fig. 11 showing two tumblers brought to unlocking position.

Fig. 13 is a view similar to Fig. 12 showing three tumblers brought to unlocking position, and,

Fig. 14 is a similar view showing the operating rod and the tumblers in unlocking position.

Referring now particularly to Fig. 8, it. will be seen that I have provided a cylindrical casing 1 for the lock, this casing being provided at one end with tongues 2 arranged to enter slots 3 in a base plate 4:, which is provided with openings 5 by means of which it may be secured to the dash-board 6 or other suitable support. The casing 1 is securely fastened to the base plate 4, so as to form virtually an integral part thereof.

A. spacing ring 7 is disposed adjacent to the base plate 4, and an annular dial plate 8 is held to the spacing plate 7 by means of rivets 9 or in any other suitable manner. It

. will be seen from Fig. 4:, that the dial plate 8 extends beyond the inner edge of the spac ing plate 7. A second dial plate 10 is provided, which has a shoulder 10 arranged to fit behind the edge of the dial plate 9, so as to prevent the displacement of the dial plate.

At 11 I have shown a knob or wheel having a slotted shank 12 arranged to receive lugs 10 carried by the dial member 10, see Fig. 5, a rod 13 being secured to the knob, as shown in the drawings. On the interior of the casing 1 is a bushing let, which may be held in place by a pin 15.

Referring to Fig. 9 it will be seen that I have provided a series of spacing rings and tumblers, the rings being shown at 16, 17. 18 and 19 respectively, and the tumblers at 20, 21, and 22. The rings are designed to be secured in fixed position in the casing, while the tumblers are loosely mounted on the shaft 13 in the relative positions shown in Fig. 9. The shaft 13 also has a collar 23. At the opposite end of the casing 1 is a sleeve 24, which has an end portion 25 through which the rod 13 extends. The sleeve is threaded as shown at 26 and incloses a slidable cylinder 27 which is arranged to receive a shaft or red 28, being secured thereto by means of a pin 29. The cylinder 27 is provided with a bore arranged to receive one end of the rod or shaft 13, and is provided with slots 27 for a purpose hereinafter explained.

In Figs. 10 to 14, inclusive, I have shown the operating rod or shaft 13 as being pr vided with four pins 13, 13 13 and 13 respectively; these pins being rounded on one side.

Each of the tumblers is provided with a slot, which is arranged to receive one of the pins on the rod or shaft 13, these slots being shown at 20*, 21, and 22 respectively. The tumbler 22 is provided with a pin 22, while the tumblers 20 and 21 are provided with pins 20 20 and 21-21 respectively. In Fig. 1. the threaded sleeve 24 is shown asbeing connected with an elbow 30 and the shaft 28 bears a bevel gear 31, while the bevel gear 32 is secured to the valve stem 33, the latter controlling the needle valve of the carbureter 34 in the well known manner.

From the foregoing description of the various parts of the device the operation thereof may be readily understood.

It will be noted that the dial plates 8 and 10 have registeringindicating marks these ranging from zero to one hundred. in assembling the parts the ring 19 is first inserted and then the tumblers and rings in the order shown in Fig. 9. The rod or shaft 13 is then inserted until its collar 23 engages the ring 16. As stated before, the rings are designed to fit tightlyin the casing and these are pushed until they reach their proper position, the tumblers being loosely mounted on the rod, as stated befdre. The bushing 14 which waspreviously placed on the shank of the hand-wheel 11 is now secured in position by means of a pin 15 Or in any other suitable manner.

The operation of the tumblers is effected by means of the pins 13*, 13 and 13 and the tumblers are designed to be brought into such a position that their slots 20221 and 22 are in alinement so "as to perm-it the alineinent with the slot rod 13 to be pushed forwardly so that the pins will enter the alined slots. In Fig. at I have shown the normal position of the lock, that is to say, the position which the parts assume when the car is in operation, so as to adjust the needle valve. In this position it will be observed that the pins are in the slots in the tumblers so that when the rod 13 is rotated the tumblers are rotated and the slots are kept in alinement. The rotation of the rod 13 will cause the rotation of the sleeve 27 through the en gagement of the pin 13 in the slot 27', and this will rotate the shaft or rod 28 and hence the valve stem through the medium of the gears 31 and 32.

If there is no necessity for adjustment of the needle valve then the relative position of the dials 8 and 10 will indicate the position for the best running of the car.

.N ow when it is desired to lock the needle valve the knob is turned until, the valve is closed. Now by pulling outwardly on the hand-wheel or knob 11 the shaft 13 will be moved so as to bring the pins out of their respective slots. The hand-wheel is now turned until the pins 13*, 13 and 13 engage the pins on the tumblers which will rotate the tumblers so as to bring the slots out of alinement. The outward movement of the hand wheel or knob 11 will disengage the pin 13 from the sleeve 27. these-parts being in fact a clutch, so that the needle valve cannot be operated until the pin is returned into its clutching position, in other words, the device is looked as far as the operation of the needle valve of the carbureter is coir cerned.

In order to unlock the valve it is nccessary to engage the pins on the tumblers with those on the rod 13. Obviously the points of engagement may be indicated by the relative positions of the indicating marks on the two dials 8 and 10. r

The dial plate 10 is turned one or more rounds, stopping with 10 on the dial opposite on the fixed scale of the plate 8. T] 's movementwill cause the pin 13 to engage the pin on the tumbler 22 so as to bring it in 27 The knob or handle 11 is now rotated countercloclm'ise to bring 80 on the movable dial opposite 30 on the fixed scale of the plate 8. This causes the pin 13 to engage the pin on the tumbler 1 and toniove it so that the slot in the tumbler 21 is brought into alinenient with the slot inthe tumbler 22 (see 12). The knob 11' is now rotated forwardlyagain to, bring 27 on the movable dial. to 30 on the fixed scale. This causes are pin 13 onthe shaft or rod 13 to engage Zone of the pins on the tumbler 20 and to bring the latter so that its slot is also in alinement with the others, as shown in Fig. 13. The handleior knob is nowrotated-in the reverse direction so as to bring the three pins 13 13 and 13 in alinement with the slots 20, 21* and 22 of their respective tumblers as shown in Fig. 14. The rod 13 may now be forced inwardly to clutch the rod or shaft 28 in the manner already described and to permit the free adjustment or unlocking of the needle valve of the carburetor.

Obviously, by changing the position of the pins on the tumblers or by changing the relative positions of the slots a great number of combinations may be made. Even a slight change of one of these elements will of course give a different combination from that which has been used as an illustration of the operation of the device.

In Fig. 2 I have shown a modified form of the device, in which the lock is shown as applied to the valve stem of Ford cars. In this instance a casing 60 is secured to the carbureter and this casing has a housing 61 which surrounds the valve stem 33. A union 62 connects the casing 61 with the sleeve 24.. In this modification the clutch 27 has a slotted extension 63 which is engaged by a pin 64 on the valve stem 33. It is obvious that if the pin is within the slot the valve stem may be operated by the turning of the knob 11. This provides for an adjustment to accommodate valve stems of different lengths. In this form of the device the dash 6 may be cut away at 6 to permit the lock to be secured in inclined position with respect thereto.

It will be noted that this combination lock serves a double function in that it permits the locking of the carbureter so that it is impossible to run the machine and it also serves as a means for adjusting the carbureter and provides a. scale for indicating the best running position. The combination lock may be, of course, used in other connections than with looking devices for car bureters.

I claim:

1. A combination lock comprising a fixed dial, a relatively movable dial, an operating rod secured to said second named dial and having a series of alined pins, a plurality of tumblers loosely mounted on said rod, each tumbler being provided with a slot, one or more pins carried by each of said tumblers and adapted to be engaged by the respective pins on the rod for rotating said tumblers to bring said slots into alinement.

2. A combination lock comprising a fixed dial, a relatively movable dial, an operating rod secured to said second named dial and having a series of alined pins, a plurality of tumblers loosely mounted on said rod, each tumbler being provided with a slot, one or more pins carried by each of said tumblers and adapted to be engaged by the respective pins on the rod for rotating said tumblers to bring said slots into alinement, the pins on said rod being adapted to enter the alined slots whereby longitudinal movement of the rod is permitted.

3. A combination lock comprising a fixed dial, a relatively movable dial, an operating rod connected with said movable dial, a plurality of tumblers, each of said tumblers being provided with a slot, pins carried by the rod for moving said tumblers to bring said slots into alinement, and guide means for preventing the longitudinal displacement of the operating rod during the movement of the tumblers.

l. A combination lock comprising a fixed dial, a relatively movable dial, an operating rod connected with said movable dial, a plurality of tumblers, each of said tumblers being provided with a slot, pins carried by the rod for moving said tumblers to bring said slots into alinement, and guide means 55 for preventing the longitudinal displacement of the operating rod during the move ment of the tumblers, said last named means comprising a pin carried by the shaft and adapted to have a rotary movement therewith, and relatively stationary members disposed on either side of the pin, one of said members being arranged to receive the pin when the slots of the tumblers are in alinement.

A combination lock comprising a cylindrical casing, a fixed dial mounted at one end of said casing, a relatively movable dial, an operating rod secured to said movable dial and arranged to extend through the easing, said rod having a series of alined pins, a plurality of tumblers loosely mounted on said rod within the casing, each tumbler being provided with a slot, one or more pins carried by eachof said tumblers and adapted to be engaged by the respective pins on the rod for rotating said tumblers to bring said slots into alinement, the pins on said rod being adapted to enter the alined slots whereby longitudinal movement of the rod is permitted, spacing rings frictionally held by said casing for separating said tumblers, a sleeve disposed in one end of said cylindrical casing, a portion of said sleeve constituting a bearing, an auxiliary shaft slidably carried by the sleeve, a clutch member slidably disposed within said sleeve and secured to said auxiliary shaft, and a second clutch member carried by said rod and arranged to engage said first named clutch 120 member for rotating said auxiliary shaft.

BENJAMIN Gr. PATTERSON. 

